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402b t1_iwqxss2 wrote

Thanks for doing this! Is there any evidence to support cumulative benefits of receiving an annual flu shot? For example, if I get the flu shot five years in a row, does my immune system naturally build up a greater defense against the flu virus?

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glassfusion1 t1_iwrmy5w wrote

There are many mutations of the virus and the one that you get may not be the same one that is covered by the vaccine for that year. However, there is some evidence that even if it is not an exact match, people who are vaccinated are better able to fight it and have milder symptoms.

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